30-06-2023 дата публикации
Номер: CN116359540A
Принадлежит:
The invention relates to the technical field of motor detection, in particular to a speed detection circuit and device for a motor and a control method, and the circuit comprises a signal reverse circuit, an RC differentiating circuit, a logic circuit and a switching circuit. The input end of the signal reverse circuit is used for being connected with a motor, the output end of the signal reverse circuit is connected to the RC differentiating circuit, the signal reverse circuit is further connected with a power supply end, the RC differentiating circuit is connected to the input end of the logic circuit, and the RC differentiating circuit is further connected to the power supply end. The output end of the logic circuit is connected to the control end of the switching circuit, the switching circuit is connected to a power supply end, and the switching circuit is further used for being connected with a signal receiving end. The chip has the effect of replacing a special chip so as to reduce ...
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